Template-free synthesis of CdS hollow nanospheres based on an ionic liquid assisted hydrothermal process and their application in photocatalysis
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong 250100 (China)
Polycrystalline CdS hollow nanospheres with diameter of about 130 nm have been successfully synthesized in high yield by an ionic liquid (IL) assisted template-free hydrothermal method for the first time. Both the molar ratios of Cd/S precursor in the solution and the reaction temperature play important roles in the formation of the CdS hollow nanospheres. The concentrations of capping agent hexamethylenetetramine (HMT) and polyvinylpyrrolidone (PVP) are also crucial for the morphology and size of the final product. IL was found to be a key component in the formation of CdS hollow structures, because solid spheres were obtained in the absence of IL. A subsequent growth mechanism of hollow interior by localized Ostwald ripening process has been further discussed. Such hollow structures show high photocatalytic ability in the photodegradation of methylene blue. - Graphical abstract: TEM images of typical as-prepared CdS hollow nanospheres.
- OSTI ID:
- 21421531
- Journal Information:
- Journal of Solid State Chemistry, Vol. 183, Issue 6; Other Information: DOI: 10.1016/j.jssc.2010.04.001; PII: S0022-4596(10)00134-9; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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CADMIUM SULFIDES
HYDROTHERMAL SYNTHESIS
METHYLENE BLUE
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PHOTOCATALYSIS
PVP
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TRANSMISSION ELECTRON MICROSCOPY
UROTROPIN
AMIDES
AMINES
ANTI-INFECTIVE AGENTS
ANTIMICROBIAL AGENTS
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BLOOD SUBSTITUTES
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CHLORIDES
CHLORINE COMPOUNDS
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ELECTRON MICROSCOPY
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HETEROCYCLIC COMPOUNDS
INORGANIC PHOSPHORS
LACTAMS
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ORGANIC COMPOUNDS
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PHENOTHIAZINES
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POLYMERS
POLYVINYLS
PYRROLES
PYRROLIDONES
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SYNTHESIS